Organized at New Haven September 8, 1862. Left State for Washington, D.C., September 11. Attached to 2nd Brigade, 1st Division, 12th Army Corps, Army of the Potomac, to May, 1863. 1st Brigade, 1st Division, 12th Army Corps, Army of the Potomac, to October, 1863, and Army of the Cumberland to April, 1864. 1st Brigade, 1st Division, 20th Army Corps, Army of the Cumberland, April, 1864. 2nd Brigade, 3rd Division, 20th Army Corps, to May, 1864. 3rd Brigade, 3rd Division, 20th Army Corps, to June, 1865. Duty in the Defences of Washington till September 29, 1862. Moved to Frederick, Md., September 29, thence to Sandy Hook October 2. March to Fredericksburg, Va., December 10. Duty at Fairfax Station, Va., December 14, 1862, to January 19, 1863. Moved to Stafford C. H. January 19-23, and duty there till April 27. Chancellorsville Campaign April 27-May 6. Battle of Chancellorsville May 1-5. Gettysburg (Pa.) Campaign June 11-July 24. Battle of Gettysburg July 1-3. Near Raccoon Ford till September 24. Moved to Brandy Station, thence to Bealeton and to Stevenson, Ala., September 24-October 3 Duty along Nashville & Chattanooga R. R. till April, 1864. Action at Tracy City, Tenn., January 20, 1864 (Co. "B"). Atlanta Ga. Campaign May to September, 1864. Demonstration on Rocky Faced Ridge May 8-11. Buzzard's Roost Gap May 8-9. Boyd's Trail May 10. Battle of Resaca May 14-15. Cassville May 19. Guard Ordnance Trains May 24-June 13 Provost duty at Ackworth, Ga., till July 8. At Marietta till July 16. Peach Tree Creek July 19-20. Siege of Atlanta July 22-August 25. Operations at Chattahoochee River Bridge August 26-September 2. Occupation of Atlanta September 2-November 15. March to the sea November 15-December 10. Siege of Savannah December 10-21. At Hardee's Plantation January 4-16, 1865. Campaign of the Carolinas January to April. Lawtonville, S.C., February 2. Reconnoissance to Silver Run Creek, N. C., March 14. Averysboro or Taylor's Hole Creek March 16. Battle of Bentonville March 19-21. Occupation of Goldsboro March 24. Occupation of Raleigh April 14. Bennett's House April 26. Surrender of Johnston and his army. March to Washington, D.C., via Richmond, Va., April 29-May 20. Grand Review May 24. Camp near Fort Lincoln till June 13. Mustered out June 13, 1865. Regiment lost during service 4 Officers and 76 Enlisted men killed and mortally wounded and 3 Officers and 85 Enlisted men by disease. Total 168.